TI-83 Plus Operating the TI-83 Plus Silver Edition 47
Equation Operating System (EOS)Order of Evaluation
The Equation Operating System (EOS) defines the order in which
functions in expressions are entered and evaluated on the TI-83 Plus.
EOS lets you enter numbers and functions in a simple, straightforward
sequence.
EOS evaluates the functions in an expression in this order.
Order Number Function
1Functions that precede the argument, such as ‡(, sin(, or log(
2Functions that are entered after the argument, such as 2, M1, !, ¡,
r, and conversions
3Powers and roots, such as 2^5 or 5x‡32
4Permutations (nPr) and combinations (nCr)
5Multiplication, implied multiplication, and division
6Addition and subtraction
7Relational functions, such as > or
8Logic operator and
9Logic operators or and xor